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Connector Type
RCA Connectors
Ease of Installation
Beginner (Installs < 10 minutes)
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Simple Device Limits Noise in Your Audio Chain
Radio Design Labs EZ-HK2 Composite Video Hum Killer
Radio Design Labs EZ-HK2 Composite Video Hum Killer
Radio Design Labs EZ-HK2 Composite Video Hum Killer
Item# 77995
Price: Normally $119.63 
Hot Deal $78.97
Free shipping on orders over $175 - See Details


  • Video ground-loop hum elimination
  • 75 Ohm composite video galvanic isolation
  • Input and output RCA jacks
  • Switch-selectable ground lift for output jacks
  • Portable use or permanent installation

Essential Info

The EZ-HK2 is a video transformer isolation module for use with standard 75 Ohm composite video. Input and output connections are provided on gold-plated RCA jacks.

The shield connection of the INPUT jack is electrically isolated from the case and from the output ground. The shield connection of the OUTPUT jack is connected to the case shield through a rear-panel ground-lift switch.

The EZ-HK2 eliminates hum due to ground loops when it is installed between a video source, such as a computer or DVD player, and the input of a grounded video monitor or projector in an A/V or video system.

For a unit that provides hum elimination for both video and audio, please see the EZ-HK3.



  • Input: Composite Video, 1 V p-p nominal, ground-isolated
  • Input Impedance: 75 Ohms
  • Input / Output Connectors: RCA Phono
  • Output: Composite Video, 1 V p-p nominal
  • Output Impedance: 75 Ohms
  • Output Ground Isolation: Switch-selectable
  • Gain: Unity nominal (passive circuit)
  • Video Bandwidth: 40 Hz to >5 MHz
  • Warranty: 3 Years; contact RDL technical support department for assistance
  • Case dimensions: 2.9" (7.4 cm)W x 3" (7.6 cm)D
  • Mounting size: 1/6 rack width


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